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B2 [ C ] an occasion when two or more similar things happen at the same time, especially in a way that is unlikely and surprising:You chose exactly the same wallpaper as us – what a coincidence!Is it just a coincidence that the wife of the man who ran the competition won first prize?a series of strange/amazing coincidences

You just provided me an example for a literal Dictionary definition of the word Coincedence. An Ensō (again, the easiest symbol in the world to make by accident since it’s just literally drawing a circle) and a Haiku is a neat parallel, but I don’t find it proof enough that it was done deliberately.

It would be cool if that is the intention, but it is far too flimsy a piece of evidence, unless someone comes out and says, "Yeah we did intend that."